Means for connecting ferro or reenforced concrete piles to wooden piles



@d. 16 192 3.. 1,4?1,124 E. HANDL MEAN$ FOB CONNECTING FERRO'OR REENF'ORCED CONCRETE FILES TO WOODEN FILES Filed July 14, 1923 Patented on. re, teas.

EGON HANDL, OF AKSTERDAM, N

MEANS FOR CONNECTING FERRO OB REENFORCED CONCRETE FILES TO WOODEN FILES.

Application filed July 14, 1928. Serial No. 851,644.

To all whom it may concern:-

Be it known that I, Econ HANDL, a subject of the Kingdom of the Netherlands,

piles on top of wooden ones. It has, for

1 instance, been suggested to make the upper end of the wooden pile smaller in diameter and to provide'the lower end of the ferroconcrete pile with a socket portion which fits over the reduced upper end portion of the wooden pile, the bottom of the socket resting upon the top face of the reduced upper end of the pile and the lower edge portion of the socket restin upon a shoulder formed at the loweren top portion of the wooden pile. 'Such connectlons are inca able of taking .up horizontal forces, as t e tubular or socket portion of the term-concrete pile usually breaks at the point corresponding to the so top end of the reduced upper portion of the wooden pile upon the occurrence-of a horizontally acting pull.

Other known modes of connecting wooden and concrete iles are even .less suitable 85 for taking u liorizontal forces.

It is the o ject of the present invention to provide improved means of connection of the kind referred to above which are suitable for taking up or transmitting considerable horizontal forces without any danger of the tubular extension or socket of the term-concrete pile breaking at the point of connection.

The invention consists mainly in enclosing the bearing surface between the upper reduced end of the wooden pile and the ferrQ concrete pile by a tightly fitting sleeve made of iron or steel. This sleeve may, if desired, be rovided at its lower end with a horizontal ange resting upon the shoulder formed at the lower end of the reduced upper portion of the wooden ile. This connecting sleeve is entirely .em edded in consimilar to F ig. 1 but shows a modified conof the reduced crete and is therefore sealed against the I action of the air so that it cannot rust and cannot cause the ferro-concrete to be attacked by rust.

By these means an extremely ri id and strong connection between the woo en pile and the ferric-concrete extension pile is attained which is absolutely safe against breaking or cracking upon the occurrence of laterally acting forces. This connection has also the advantage of protecting the upper end of the. wooden pile against crackin The invention is illustrated by way of example in the accompanying drawing; Fig. 1 showing a vertical section throu h the upper end of the wooden pile and t e connecting sleeve, Fig. 2 is a section through a wooden pile and a concrete pile or extension piece secured to the top of the wooden pile and Fig. 3 is a vertical section necting sleeve.

In the drawing 3 represents the iron or steel sleeve whic fits ti ht upon the end 2 of the wooden pile 1, which has been previously reduced in d1ameter or made of smaller size. This sleeve is embedded in the ferro-concrete pile 4 so as to enclose a coreportion 50f concrete which'when the two piles are connected rests upon the top of the end portion 2. It will therefore be seen that the bearing surface between the parts 2 and 5 is enclosed by the connectin sleeve 3. The connecting sleeve may, i required, be rovided with a horizontal flange at its ower end resting upon the shoulder 6 of the wooden pile 1.

I claim as my invention:

1. A pile comprising a wooden base provided with a reduced cylindrical portion; a metal sleeve on said reduced portion extending beyond the end of said base; and a concrete upper portion on said base having an internal, axial core which extends into and fills the projecting upper portion of said sleeve and entirely surrounds said sleeve.

2. A pile comprising a wooden base provided with a re uced portion and a shoulder at the foot of sald portion; a metal sleeve on said reduced portion extending beyond the end of said base and having a flange adapted to rest 611 said shoulder lh bestimony whereof l afllx my signaand a concrete upper portion on said base ture. having an internal, axial core which extends into and fills the projecting upper N HANDL I 5 pqrtion of said sleeve and entirely surrounds Witnesses sald sleeve, said concrete portlon also rest H. Y. Kmrme,

ing on said flange of the sleeve. ALBERT M. DOYLE. 

